1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <[email protected]> 5 * Copyright (C) 2001 Greg Kroah-Hartman <[email protected]> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]> 7 * Copyright (C) 2001 James Morris <[email protected]> 8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) 9 * Copyright (C) 2016 Mellanox Techonologies 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * Due to this file being licensed under the GPL there is controversy over 17 * whether this permits you to write a module that #includes this file 18 * without placing your module under the GPL. Please consult a lawyer for 19 * advice before doing this. 20 * 21 */ 22 23 #ifndef __LINUX_SECURITY_H 24 #define __LINUX_SECURITY_H 25 26 #include <linux/key.h> 27 #include <linux/capability.h> 28 #include <linux/fs.h> 29 #include <linux/slab.h> 30 #include <linux/err.h> 31 #include <linux/string.h> 32 #include <linux/mm.h> 33 #include <linux/fs.h> 34 35 struct linux_binprm; 36 struct cred; 37 struct rlimit; 38 struct kernel_siginfo; 39 struct sembuf; 40 struct kern_ipc_perm; 41 struct audit_context; 42 struct super_block; 43 struct inode; 44 struct dentry; 45 struct file; 46 struct vfsmount; 47 struct path; 48 struct qstr; 49 struct iattr; 50 struct fown_struct; 51 struct file_operations; 52 struct msg_msg; 53 struct xattr; 54 struct kernfs_node; 55 struct xfrm_sec_ctx; 56 struct mm_struct; 57 struct fs_context; 58 struct fs_parameter; 59 enum fs_value_type; 60 61 /* Default (no) options for the capable function */ 62 #define CAP_OPT_NONE 0x0 63 /* If capable should audit the security request */ 64 #define CAP_OPT_NOAUDIT BIT(1) 65 /* If capable is being called by a setid function */ 66 #define CAP_OPT_INSETID BIT(2) 67 68 /* LSM Agnostic defines for fs_context::lsm_flags */ 69 #define SECURITY_LSM_NATIVE_LABELS 1 70 71 struct ctl_table; 72 struct audit_krule; 73 struct user_namespace; 74 struct timezone; 75 76 enum lsm_event { 77 LSM_POLICY_CHANGE, 78 }; 79 80 /* 81 * These are reasons that can be passed to the security_locked_down() 82 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 83 * ability for userland to modify kernel code) are placed before 84 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 85 * confidentiality (ie, the ability for userland to extract 86 * information from the running kernel that would otherwise be 87 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 88 * 89 * LSM authors should note that the semantics of any given lockdown 90 * reason are not guaranteed to be stable - the same reason may block 91 * one set of features in one kernel release, and a slightly different 92 * set of features in a later kernel release. LSMs that seek to expose 93 * lockdown policy at any level of granularity other than "none", 94 * "integrity" or "confidentiality" are responsible for either 95 * ensuring that they expose a consistent level of functionality to 96 * userland, or ensuring that userland is aware that this is 97 * potentially a moving target. It is easy to misuse this information 98 * in a way that could break userspace. Please be careful not to do 99 * so. 100 * 101 * If you add to this, remember to extend lockdown_reasons in 102 * security/lockdown/lockdown.c. 103 */ 104 enum lockdown_reason { 105 LOCKDOWN_NONE, 106 LOCKDOWN_MODULE_SIGNATURE, 107 LOCKDOWN_DEV_MEM, 108 LOCKDOWN_KEXEC, 109 LOCKDOWN_HIBERNATION, 110 LOCKDOWN_PCI_ACCESS, 111 LOCKDOWN_IOPORT, 112 LOCKDOWN_MSR, 113 LOCKDOWN_ACPI_TABLES, 114 LOCKDOWN_PCMCIA_CIS, 115 LOCKDOWN_TIOCSSERIAL, 116 LOCKDOWN_MODULE_PARAMETERS, 117 LOCKDOWN_MMIOTRACE, 118 LOCKDOWN_DEBUGFS, 119 LOCKDOWN_INTEGRITY_MAX, 120 LOCKDOWN_KCORE, 121 LOCKDOWN_KPROBES, 122 LOCKDOWN_BPF_READ, 123 LOCKDOWN_PERF, 124 LOCKDOWN_CONFIDENTIALITY_MAX, 125 }; 126 127 /* These functions are in security/commoncap.c */ 128 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 129 int cap, unsigned int opts); 130 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 131 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 132 extern int cap_ptrace_traceme(struct task_struct *parent); 133 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 134 extern int cap_capset(struct cred *new, const struct cred *old, 135 const kernel_cap_t *effective, 136 const kernel_cap_t *inheritable, 137 const kernel_cap_t *permitted); 138 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 139 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 140 const void *value, size_t size, int flags); 141 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 142 extern int cap_inode_need_killpriv(struct dentry *dentry); 143 extern int cap_inode_killpriv(struct dentry *dentry); 144 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 145 void **buffer, bool alloc); 146 extern int cap_mmap_addr(unsigned long addr); 147 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 148 unsigned long prot, unsigned long flags); 149 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 150 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 151 unsigned long arg4, unsigned long arg5); 152 extern int cap_task_setscheduler(struct task_struct *p); 153 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 154 extern int cap_task_setnice(struct task_struct *p, int nice); 155 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 156 157 struct msghdr; 158 struct sk_buff; 159 struct sock; 160 struct sockaddr; 161 struct socket; 162 struct flowi; 163 struct dst_entry; 164 struct xfrm_selector; 165 struct xfrm_policy; 166 struct xfrm_state; 167 struct xfrm_user_sec_ctx; 168 struct seq_file; 169 struct sctp_endpoint; 170 171 #ifdef CONFIG_MMU 172 extern unsigned long mmap_min_addr; 173 extern unsigned long dac_mmap_min_addr; 174 #else 175 #define mmap_min_addr 0UL 176 #define dac_mmap_min_addr 0UL 177 #endif 178 179 /* 180 * Values used in the task_security_ops calls 181 */ 182 /* setuid or setgid, id0 == uid or gid */ 183 #define LSM_SETID_ID 1 184 185 /* setreuid or setregid, id0 == real, id1 == eff */ 186 #define LSM_SETID_RE 2 187 188 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 189 #define LSM_SETID_RES 4 190 191 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 192 #define LSM_SETID_FS 8 193 194 /* Flags for security_task_prlimit(). */ 195 #define LSM_PRLIMIT_READ 1 196 #define LSM_PRLIMIT_WRITE 2 197 198 /* forward declares to avoid warnings */ 199 struct sched_param; 200 struct request_sock; 201 202 /* bprm->unsafe reasons */ 203 #define LSM_UNSAFE_SHARE 1 204 #define LSM_UNSAFE_PTRACE 2 205 #define LSM_UNSAFE_NO_NEW_PRIVS 4 206 207 #ifdef CONFIG_MMU 208 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 209 void __user *buffer, size_t *lenp, loff_t *ppos); 210 #endif 211 212 /* security_inode_init_security callback function to write xattrs */ 213 typedef int (*initxattrs) (struct inode *inode, 214 const struct xattr *xattr_array, void *fs_data); 215 216 217 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 218 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 219 #define __data_id_stringify(dummy, str) #str, 220 221 enum kernel_load_data_id { 222 __kernel_read_file_id(__data_id_enumify) 223 }; 224 225 static const char * const kernel_load_data_str[] = { 226 __kernel_read_file_id(__data_id_stringify) 227 }; 228 229 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 230 { 231 if ((unsigned)id >= LOADING_MAX_ID) 232 return kernel_load_data_str[LOADING_UNKNOWN]; 233 234 return kernel_load_data_str[id]; 235 } 236 237 #ifdef CONFIG_SECURITY 238 239 int call_lsm_notifier(enum lsm_event event, void *data); 240 int register_lsm_notifier(struct notifier_block *nb); 241 int unregister_lsm_notifier(struct notifier_block *nb); 242 243 /* prototypes */ 244 extern int security_init(void); 245 extern int early_security_init(void); 246 247 /* Security operations */ 248 int security_binder_set_context_mgr(struct task_struct *mgr); 249 int security_binder_transaction(struct task_struct *from, 250 struct task_struct *to); 251 int security_binder_transfer_binder(struct task_struct *from, 252 struct task_struct *to); 253 int security_binder_transfer_file(struct task_struct *from, 254 struct task_struct *to, struct file *file); 255 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 256 int security_ptrace_traceme(struct task_struct *parent); 257 int security_capget(struct task_struct *target, 258 kernel_cap_t *effective, 259 kernel_cap_t *inheritable, 260 kernel_cap_t *permitted); 261 int security_capset(struct cred *new, const struct cred *old, 262 const kernel_cap_t *effective, 263 const kernel_cap_t *inheritable, 264 const kernel_cap_t *permitted); 265 int security_capable(const struct cred *cred, 266 struct user_namespace *ns, 267 int cap, 268 unsigned int opts); 269 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 270 int security_quota_on(struct dentry *dentry); 271 int security_syslog(int type); 272 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 273 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 274 int security_bprm_set_creds(struct linux_binprm *bprm); 275 int security_bprm_check(struct linux_binprm *bprm); 276 void security_bprm_committing_creds(struct linux_binprm *bprm); 277 void security_bprm_committed_creds(struct linux_binprm *bprm); 278 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 279 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 280 int security_sb_alloc(struct super_block *sb); 281 void security_sb_free(struct super_block *sb); 282 void security_free_mnt_opts(void **mnt_opts); 283 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 284 int security_sb_remount(struct super_block *sb, void *mnt_opts); 285 int security_sb_kern_mount(struct super_block *sb); 286 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 287 int security_sb_statfs(struct dentry *dentry); 288 int security_sb_mount(const char *dev_name, const struct path *path, 289 const char *type, unsigned long flags, void *data); 290 int security_sb_umount(struct vfsmount *mnt, int flags); 291 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 292 int security_sb_set_mnt_opts(struct super_block *sb, 293 void *mnt_opts, 294 unsigned long kern_flags, 295 unsigned long *set_kern_flags); 296 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 297 struct super_block *newsb, 298 unsigned long kern_flags, 299 unsigned long *set_kern_flags); 300 int security_add_mnt_opt(const char *option, const char *val, 301 int len, void **mnt_opts); 302 int security_move_mount(const struct path *from_path, const struct path *to_path); 303 int security_dentry_init_security(struct dentry *dentry, int mode, 304 const struct qstr *name, void **ctx, 305 u32 *ctxlen); 306 int security_dentry_create_files_as(struct dentry *dentry, int mode, 307 struct qstr *name, 308 const struct cred *old, 309 struct cred *new); 310 311 int security_inode_alloc(struct inode *inode); 312 void security_inode_free(struct inode *inode); 313 int security_inode_init_security(struct inode *inode, struct inode *dir, 314 const struct qstr *qstr, 315 initxattrs initxattrs, void *fs_data); 316 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 317 const struct qstr *qstr, const char **name, 318 void **value, size_t *len); 319 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 320 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 321 struct dentry *new_dentry); 322 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 323 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 324 const char *old_name); 325 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 326 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 327 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 328 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 329 struct inode *new_dir, struct dentry *new_dentry, 330 unsigned int flags); 331 int security_inode_readlink(struct dentry *dentry); 332 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 333 bool rcu); 334 int security_inode_permission(struct inode *inode, int mask); 335 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 336 int security_inode_getattr(const struct path *path); 337 int security_inode_setxattr(struct dentry *dentry, const char *name, 338 const void *value, size_t size, int flags); 339 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 340 const void *value, size_t size, int flags); 341 int security_inode_getxattr(struct dentry *dentry, const char *name); 342 int security_inode_listxattr(struct dentry *dentry); 343 int security_inode_removexattr(struct dentry *dentry, const char *name); 344 int security_inode_need_killpriv(struct dentry *dentry); 345 int security_inode_killpriv(struct dentry *dentry); 346 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 347 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 348 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 349 void security_inode_getsecid(struct inode *inode, u32 *secid); 350 int security_inode_copy_up(struct dentry *src, struct cred **new); 351 int security_inode_copy_up_xattr(const char *name); 352 int security_kernfs_init_security(struct kernfs_node *kn_dir, 353 struct kernfs_node *kn); 354 int security_file_permission(struct file *file, int mask); 355 int security_file_alloc(struct file *file); 356 void security_file_free(struct file *file); 357 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 358 int security_mmap_file(struct file *file, unsigned long prot, 359 unsigned long flags); 360 int security_mmap_addr(unsigned long addr); 361 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 362 unsigned long prot); 363 int security_file_lock(struct file *file, unsigned int cmd); 364 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 365 void security_file_set_fowner(struct file *file); 366 int security_file_send_sigiotask(struct task_struct *tsk, 367 struct fown_struct *fown, int sig); 368 int security_file_receive(struct file *file); 369 int security_file_open(struct file *file); 370 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 371 void security_task_free(struct task_struct *task); 372 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 373 void security_cred_free(struct cred *cred); 374 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 375 void security_transfer_creds(struct cred *new, const struct cred *old); 376 void security_cred_getsecid(const struct cred *c, u32 *secid); 377 int security_kernel_act_as(struct cred *new, u32 secid); 378 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 379 int security_kernel_module_request(char *kmod_name); 380 int security_kernel_load_data(enum kernel_load_data_id id); 381 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 382 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 383 enum kernel_read_file_id id); 384 int security_task_fix_setuid(struct cred *new, const struct cred *old, 385 int flags); 386 int security_task_setpgid(struct task_struct *p, pid_t pgid); 387 int security_task_getpgid(struct task_struct *p); 388 int security_task_getsid(struct task_struct *p); 389 void security_task_getsecid(struct task_struct *p, u32 *secid); 390 int security_task_setnice(struct task_struct *p, int nice); 391 int security_task_setioprio(struct task_struct *p, int ioprio); 392 int security_task_getioprio(struct task_struct *p); 393 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 394 unsigned int flags); 395 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 396 struct rlimit *new_rlim); 397 int security_task_setscheduler(struct task_struct *p); 398 int security_task_getscheduler(struct task_struct *p); 399 int security_task_movememory(struct task_struct *p); 400 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 401 int sig, const struct cred *cred); 402 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 403 unsigned long arg4, unsigned long arg5); 404 void security_task_to_inode(struct task_struct *p, struct inode *inode); 405 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 406 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 407 int security_msg_msg_alloc(struct msg_msg *msg); 408 void security_msg_msg_free(struct msg_msg *msg); 409 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 410 void security_msg_queue_free(struct kern_ipc_perm *msq); 411 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 412 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 413 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 414 struct msg_msg *msg, int msqflg); 415 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 416 struct task_struct *target, long type, int mode); 417 int security_shm_alloc(struct kern_ipc_perm *shp); 418 void security_shm_free(struct kern_ipc_perm *shp); 419 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 420 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 421 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 422 int security_sem_alloc(struct kern_ipc_perm *sma); 423 void security_sem_free(struct kern_ipc_perm *sma); 424 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 425 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 426 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 427 unsigned nsops, int alter); 428 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 429 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 430 char **value); 431 int security_setprocattr(const char *lsm, const char *name, void *value, 432 size_t size); 433 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 434 int security_ismaclabel(const char *name); 435 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 436 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 437 void security_release_secctx(char *secdata, u32 seclen); 438 439 void security_inode_invalidate_secctx(struct inode *inode); 440 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 441 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 442 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 443 int security_locked_down(enum lockdown_reason what); 444 #else /* CONFIG_SECURITY */ 445 446 static inline int call_lsm_notifier(enum lsm_event event, void *data) 447 { 448 return 0; 449 } 450 451 static inline int register_lsm_notifier(struct notifier_block *nb) 452 { 453 return 0; 454 } 455 456 static inline int unregister_lsm_notifier(struct notifier_block *nb) 457 { 458 return 0; 459 } 460 461 static inline void security_free_mnt_opts(void **mnt_opts) 462 { 463 } 464 465 /* 466 * This is the default capabilities functionality. Most of these functions 467 * are just stubbed out, but a few must call the proper capable code. 468 */ 469 470 static inline int security_init(void) 471 { 472 return 0; 473 } 474 475 static inline int early_security_init(void) 476 { 477 return 0; 478 } 479 480 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 481 { 482 return 0; 483 } 484 485 static inline int security_binder_transaction(struct task_struct *from, 486 struct task_struct *to) 487 { 488 return 0; 489 } 490 491 static inline int security_binder_transfer_binder(struct task_struct *from, 492 struct task_struct *to) 493 { 494 return 0; 495 } 496 497 static inline int security_binder_transfer_file(struct task_struct *from, 498 struct task_struct *to, 499 struct file *file) 500 { 501 return 0; 502 } 503 504 static inline int security_ptrace_access_check(struct task_struct *child, 505 unsigned int mode) 506 { 507 return cap_ptrace_access_check(child, mode); 508 } 509 510 static inline int security_ptrace_traceme(struct task_struct *parent) 511 { 512 return cap_ptrace_traceme(parent); 513 } 514 515 static inline int security_capget(struct task_struct *target, 516 kernel_cap_t *effective, 517 kernel_cap_t *inheritable, 518 kernel_cap_t *permitted) 519 { 520 return cap_capget(target, effective, inheritable, permitted); 521 } 522 523 static inline int security_capset(struct cred *new, 524 const struct cred *old, 525 const kernel_cap_t *effective, 526 const kernel_cap_t *inheritable, 527 const kernel_cap_t *permitted) 528 { 529 return cap_capset(new, old, effective, inheritable, permitted); 530 } 531 532 static inline int security_capable(const struct cred *cred, 533 struct user_namespace *ns, 534 int cap, 535 unsigned int opts) 536 { 537 return cap_capable(cred, ns, cap, opts); 538 } 539 540 static inline int security_quotactl(int cmds, int type, int id, 541 struct super_block *sb) 542 { 543 return 0; 544 } 545 546 static inline int security_quota_on(struct dentry *dentry) 547 { 548 return 0; 549 } 550 551 static inline int security_syslog(int type) 552 { 553 return 0; 554 } 555 556 static inline int security_settime64(const struct timespec64 *ts, 557 const struct timezone *tz) 558 { 559 return cap_settime(ts, tz); 560 } 561 562 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 563 { 564 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 565 } 566 567 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 568 { 569 return cap_bprm_set_creds(bprm); 570 } 571 572 static inline int security_bprm_check(struct linux_binprm *bprm) 573 { 574 return 0; 575 } 576 577 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 578 { 579 } 580 581 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 582 { 583 } 584 585 static inline int security_fs_context_dup(struct fs_context *fc, 586 struct fs_context *src_fc) 587 { 588 return 0; 589 } 590 static inline int security_fs_context_parse_param(struct fs_context *fc, 591 struct fs_parameter *param) 592 { 593 return -ENOPARAM; 594 } 595 596 static inline int security_sb_alloc(struct super_block *sb) 597 { 598 return 0; 599 } 600 601 static inline void security_sb_free(struct super_block *sb) 602 { } 603 604 static inline int security_sb_eat_lsm_opts(char *options, 605 void **mnt_opts) 606 { 607 return 0; 608 } 609 610 static inline int security_sb_remount(struct super_block *sb, 611 void *mnt_opts) 612 { 613 return 0; 614 } 615 616 static inline int security_sb_kern_mount(struct super_block *sb) 617 { 618 return 0; 619 } 620 621 static inline int security_sb_show_options(struct seq_file *m, 622 struct super_block *sb) 623 { 624 return 0; 625 } 626 627 static inline int security_sb_statfs(struct dentry *dentry) 628 { 629 return 0; 630 } 631 632 static inline int security_sb_mount(const char *dev_name, const struct path *path, 633 const char *type, unsigned long flags, 634 void *data) 635 { 636 return 0; 637 } 638 639 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 640 { 641 return 0; 642 } 643 644 static inline int security_sb_pivotroot(const struct path *old_path, 645 const struct path *new_path) 646 { 647 return 0; 648 } 649 650 static inline int security_sb_set_mnt_opts(struct super_block *sb, 651 void *mnt_opts, 652 unsigned long kern_flags, 653 unsigned long *set_kern_flags) 654 { 655 return 0; 656 } 657 658 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 659 struct super_block *newsb, 660 unsigned long kern_flags, 661 unsigned long *set_kern_flags) 662 { 663 return 0; 664 } 665 666 static inline int security_add_mnt_opt(const char *option, const char *val, 667 int len, void **mnt_opts) 668 { 669 return 0; 670 } 671 672 static inline int security_move_mount(const struct path *from_path, 673 const struct path *to_path) 674 { 675 return 0; 676 } 677 678 static inline int security_inode_alloc(struct inode *inode) 679 { 680 return 0; 681 } 682 683 static inline void security_inode_free(struct inode *inode) 684 { } 685 686 static inline int security_dentry_init_security(struct dentry *dentry, 687 int mode, 688 const struct qstr *name, 689 void **ctx, 690 u32 *ctxlen) 691 { 692 return -EOPNOTSUPP; 693 } 694 695 static inline int security_dentry_create_files_as(struct dentry *dentry, 696 int mode, struct qstr *name, 697 const struct cred *old, 698 struct cred *new) 699 { 700 return 0; 701 } 702 703 704 static inline int security_inode_init_security(struct inode *inode, 705 struct inode *dir, 706 const struct qstr *qstr, 707 const initxattrs xattrs, 708 void *fs_data) 709 { 710 return 0; 711 } 712 713 static inline int security_old_inode_init_security(struct inode *inode, 714 struct inode *dir, 715 const struct qstr *qstr, 716 const char **name, 717 void **value, size_t *len) 718 { 719 return -EOPNOTSUPP; 720 } 721 722 static inline int security_inode_create(struct inode *dir, 723 struct dentry *dentry, 724 umode_t mode) 725 { 726 return 0; 727 } 728 729 static inline int security_inode_link(struct dentry *old_dentry, 730 struct inode *dir, 731 struct dentry *new_dentry) 732 { 733 return 0; 734 } 735 736 static inline int security_inode_unlink(struct inode *dir, 737 struct dentry *dentry) 738 { 739 return 0; 740 } 741 742 static inline int security_inode_symlink(struct inode *dir, 743 struct dentry *dentry, 744 const char *old_name) 745 { 746 return 0; 747 } 748 749 static inline int security_inode_mkdir(struct inode *dir, 750 struct dentry *dentry, 751 int mode) 752 { 753 return 0; 754 } 755 756 static inline int security_inode_rmdir(struct inode *dir, 757 struct dentry *dentry) 758 { 759 return 0; 760 } 761 762 static inline int security_inode_mknod(struct inode *dir, 763 struct dentry *dentry, 764 int mode, dev_t dev) 765 { 766 return 0; 767 } 768 769 static inline int security_inode_rename(struct inode *old_dir, 770 struct dentry *old_dentry, 771 struct inode *new_dir, 772 struct dentry *new_dentry, 773 unsigned int flags) 774 { 775 return 0; 776 } 777 778 static inline int security_inode_readlink(struct dentry *dentry) 779 { 780 return 0; 781 } 782 783 static inline int security_inode_follow_link(struct dentry *dentry, 784 struct inode *inode, 785 bool rcu) 786 { 787 return 0; 788 } 789 790 static inline int security_inode_permission(struct inode *inode, int mask) 791 { 792 return 0; 793 } 794 795 static inline int security_inode_setattr(struct dentry *dentry, 796 struct iattr *attr) 797 { 798 return 0; 799 } 800 801 static inline int security_inode_getattr(const struct path *path) 802 { 803 return 0; 804 } 805 806 static inline int security_inode_setxattr(struct dentry *dentry, 807 const char *name, const void *value, size_t size, int flags) 808 { 809 return cap_inode_setxattr(dentry, name, value, size, flags); 810 } 811 812 static inline void security_inode_post_setxattr(struct dentry *dentry, 813 const char *name, const void *value, size_t size, int flags) 814 { } 815 816 static inline int security_inode_getxattr(struct dentry *dentry, 817 const char *name) 818 { 819 return 0; 820 } 821 822 static inline int security_inode_listxattr(struct dentry *dentry) 823 { 824 return 0; 825 } 826 827 static inline int security_inode_removexattr(struct dentry *dentry, 828 const char *name) 829 { 830 return cap_inode_removexattr(dentry, name); 831 } 832 833 static inline int security_inode_need_killpriv(struct dentry *dentry) 834 { 835 return cap_inode_need_killpriv(dentry); 836 } 837 838 static inline int security_inode_killpriv(struct dentry *dentry) 839 { 840 return cap_inode_killpriv(dentry); 841 } 842 843 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 844 { 845 return -EOPNOTSUPP; 846 } 847 848 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 849 { 850 return -EOPNOTSUPP; 851 } 852 853 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 854 { 855 return 0; 856 } 857 858 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 859 { 860 *secid = 0; 861 } 862 863 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 864 { 865 return 0; 866 } 867 868 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 869 struct kernfs_node *kn) 870 { 871 return 0; 872 } 873 874 static inline int security_inode_copy_up_xattr(const char *name) 875 { 876 return -EOPNOTSUPP; 877 } 878 879 static inline int security_file_permission(struct file *file, int mask) 880 { 881 return 0; 882 } 883 884 static inline int security_file_alloc(struct file *file) 885 { 886 return 0; 887 } 888 889 static inline void security_file_free(struct file *file) 890 { } 891 892 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 893 unsigned long arg) 894 { 895 return 0; 896 } 897 898 static inline int security_mmap_file(struct file *file, unsigned long prot, 899 unsigned long flags) 900 { 901 return 0; 902 } 903 904 static inline int security_mmap_addr(unsigned long addr) 905 { 906 return cap_mmap_addr(addr); 907 } 908 909 static inline int security_file_mprotect(struct vm_area_struct *vma, 910 unsigned long reqprot, 911 unsigned long prot) 912 { 913 return 0; 914 } 915 916 static inline int security_file_lock(struct file *file, unsigned int cmd) 917 { 918 return 0; 919 } 920 921 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 922 unsigned long arg) 923 { 924 return 0; 925 } 926 927 static inline void security_file_set_fowner(struct file *file) 928 { 929 return; 930 } 931 932 static inline int security_file_send_sigiotask(struct task_struct *tsk, 933 struct fown_struct *fown, 934 int sig) 935 { 936 return 0; 937 } 938 939 static inline int security_file_receive(struct file *file) 940 { 941 return 0; 942 } 943 944 static inline int security_file_open(struct file *file) 945 { 946 return 0; 947 } 948 949 static inline int security_task_alloc(struct task_struct *task, 950 unsigned long clone_flags) 951 { 952 return 0; 953 } 954 955 static inline void security_task_free(struct task_struct *task) 956 { } 957 958 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 959 { 960 return 0; 961 } 962 963 static inline void security_cred_free(struct cred *cred) 964 { } 965 966 static inline int security_prepare_creds(struct cred *new, 967 const struct cred *old, 968 gfp_t gfp) 969 { 970 return 0; 971 } 972 973 static inline void security_transfer_creds(struct cred *new, 974 const struct cred *old) 975 { 976 } 977 978 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 979 { 980 return 0; 981 } 982 983 static inline int security_kernel_create_files_as(struct cred *cred, 984 struct inode *inode) 985 { 986 return 0; 987 } 988 989 static inline int security_kernel_module_request(char *kmod_name) 990 { 991 return 0; 992 } 993 994 static inline int security_kernel_load_data(enum kernel_load_data_id id) 995 { 996 return 0; 997 } 998 999 static inline int security_kernel_read_file(struct file *file, 1000 enum kernel_read_file_id id) 1001 { 1002 return 0; 1003 } 1004 1005 static inline int security_kernel_post_read_file(struct file *file, 1006 char *buf, loff_t size, 1007 enum kernel_read_file_id id) 1008 { 1009 return 0; 1010 } 1011 1012 static inline int security_task_fix_setuid(struct cred *new, 1013 const struct cred *old, 1014 int flags) 1015 { 1016 return cap_task_fix_setuid(new, old, flags); 1017 } 1018 1019 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1020 { 1021 return 0; 1022 } 1023 1024 static inline int security_task_getpgid(struct task_struct *p) 1025 { 1026 return 0; 1027 } 1028 1029 static inline int security_task_getsid(struct task_struct *p) 1030 { 1031 return 0; 1032 } 1033 1034 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1035 { 1036 *secid = 0; 1037 } 1038 1039 static inline int security_task_setnice(struct task_struct *p, int nice) 1040 { 1041 return cap_task_setnice(p, nice); 1042 } 1043 1044 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1045 { 1046 return cap_task_setioprio(p, ioprio); 1047 } 1048 1049 static inline int security_task_getioprio(struct task_struct *p) 1050 { 1051 return 0; 1052 } 1053 1054 static inline int security_task_prlimit(const struct cred *cred, 1055 const struct cred *tcred, 1056 unsigned int flags) 1057 { 1058 return 0; 1059 } 1060 1061 static inline int security_task_setrlimit(struct task_struct *p, 1062 unsigned int resource, 1063 struct rlimit *new_rlim) 1064 { 1065 return 0; 1066 } 1067 1068 static inline int security_task_setscheduler(struct task_struct *p) 1069 { 1070 return cap_task_setscheduler(p); 1071 } 1072 1073 static inline int security_task_getscheduler(struct task_struct *p) 1074 { 1075 return 0; 1076 } 1077 1078 static inline int security_task_movememory(struct task_struct *p) 1079 { 1080 return 0; 1081 } 1082 1083 static inline int security_task_kill(struct task_struct *p, 1084 struct kernel_siginfo *info, int sig, 1085 const struct cred *cred) 1086 { 1087 return 0; 1088 } 1089 1090 static inline int security_task_prctl(int option, unsigned long arg2, 1091 unsigned long arg3, 1092 unsigned long arg4, 1093 unsigned long arg5) 1094 { 1095 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1096 } 1097 1098 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1099 { } 1100 1101 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1102 short flag) 1103 { 1104 return 0; 1105 } 1106 1107 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1108 { 1109 *secid = 0; 1110 } 1111 1112 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1113 { 1114 return 0; 1115 } 1116 1117 static inline void security_msg_msg_free(struct msg_msg *msg) 1118 { } 1119 1120 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1121 { 1122 return 0; 1123 } 1124 1125 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1126 { } 1127 1128 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1129 int msqflg) 1130 { 1131 return 0; 1132 } 1133 1134 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1135 { 1136 return 0; 1137 } 1138 1139 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1140 struct msg_msg *msg, int msqflg) 1141 { 1142 return 0; 1143 } 1144 1145 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1146 struct msg_msg *msg, 1147 struct task_struct *target, 1148 long type, int mode) 1149 { 1150 return 0; 1151 } 1152 1153 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1154 { 1155 return 0; 1156 } 1157 1158 static inline void security_shm_free(struct kern_ipc_perm *shp) 1159 { } 1160 1161 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1162 int shmflg) 1163 { 1164 return 0; 1165 } 1166 1167 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1168 { 1169 return 0; 1170 } 1171 1172 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1173 char __user *shmaddr, int shmflg) 1174 { 1175 return 0; 1176 } 1177 1178 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1179 { 1180 return 0; 1181 } 1182 1183 static inline void security_sem_free(struct kern_ipc_perm *sma) 1184 { } 1185 1186 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1187 { 1188 return 0; 1189 } 1190 1191 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1192 { 1193 return 0; 1194 } 1195 1196 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1197 struct sembuf *sops, unsigned nsops, 1198 int alter) 1199 { 1200 return 0; 1201 } 1202 1203 static inline void security_d_instantiate(struct dentry *dentry, 1204 struct inode *inode) 1205 { } 1206 1207 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1208 char *name, char **value) 1209 { 1210 return -EINVAL; 1211 } 1212 1213 static inline int security_setprocattr(const char *lsm, char *name, 1214 void *value, size_t size) 1215 { 1216 return -EINVAL; 1217 } 1218 1219 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1220 { 1221 return 0; 1222 } 1223 1224 static inline int security_ismaclabel(const char *name) 1225 { 1226 return 0; 1227 } 1228 1229 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1230 { 1231 return -EOPNOTSUPP; 1232 } 1233 1234 static inline int security_secctx_to_secid(const char *secdata, 1235 u32 seclen, 1236 u32 *secid) 1237 { 1238 return -EOPNOTSUPP; 1239 } 1240 1241 static inline void security_release_secctx(char *secdata, u32 seclen) 1242 { 1243 } 1244 1245 static inline void security_inode_invalidate_secctx(struct inode *inode) 1246 { 1247 } 1248 1249 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1250 { 1251 return -EOPNOTSUPP; 1252 } 1253 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1254 { 1255 return -EOPNOTSUPP; 1256 } 1257 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1258 { 1259 return -EOPNOTSUPP; 1260 } 1261 static inline int security_locked_down(enum lockdown_reason what) 1262 { 1263 return 0; 1264 } 1265 #endif /* CONFIG_SECURITY */ 1266 1267 #ifdef CONFIG_SECURITY_NETWORK 1268 1269 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1270 int security_unix_may_send(struct socket *sock, struct socket *other); 1271 int security_socket_create(int family, int type, int protocol, int kern); 1272 int security_socket_post_create(struct socket *sock, int family, 1273 int type, int protocol, int kern); 1274 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1275 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1276 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1277 int security_socket_listen(struct socket *sock, int backlog); 1278 int security_socket_accept(struct socket *sock, struct socket *newsock); 1279 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1280 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1281 int size, int flags); 1282 int security_socket_getsockname(struct socket *sock); 1283 int security_socket_getpeername(struct socket *sock); 1284 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1285 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1286 int security_socket_shutdown(struct socket *sock, int how); 1287 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1288 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1289 int __user *optlen, unsigned len); 1290 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1291 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1292 void security_sk_free(struct sock *sk); 1293 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1294 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1295 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1296 void security_sock_graft(struct sock*sk, struct socket *parent); 1297 int security_inet_conn_request(struct sock *sk, 1298 struct sk_buff *skb, struct request_sock *req); 1299 void security_inet_csk_clone(struct sock *newsk, 1300 const struct request_sock *req); 1301 void security_inet_conn_established(struct sock *sk, 1302 struct sk_buff *skb); 1303 int security_secmark_relabel_packet(u32 secid); 1304 void security_secmark_refcount_inc(void); 1305 void security_secmark_refcount_dec(void); 1306 int security_tun_dev_alloc_security(void **security); 1307 void security_tun_dev_free_security(void *security); 1308 int security_tun_dev_create(void); 1309 int security_tun_dev_attach_queue(void *security); 1310 int security_tun_dev_attach(struct sock *sk, void *security); 1311 int security_tun_dev_open(void *security); 1312 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1313 int security_sctp_bind_connect(struct sock *sk, int optname, 1314 struct sockaddr *address, int addrlen); 1315 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1316 struct sock *newsk); 1317 1318 #else /* CONFIG_SECURITY_NETWORK */ 1319 static inline int security_unix_stream_connect(struct sock *sock, 1320 struct sock *other, 1321 struct sock *newsk) 1322 { 1323 return 0; 1324 } 1325 1326 static inline int security_unix_may_send(struct socket *sock, 1327 struct socket *other) 1328 { 1329 return 0; 1330 } 1331 1332 static inline int security_socket_create(int family, int type, 1333 int protocol, int kern) 1334 { 1335 return 0; 1336 } 1337 1338 static inline int security_socket_post_create(struct socket *sock, 1339 int family, 1340 int type, 1341 int protocol, int kern) 1342 { 1343 return 0; 1344 } 1345 1346 static inline int security_socket_socketpair(struct socket *socka, 1347 struct socket *sockb) 1348 { 1349 return 0; 1350 } 1351 1352 static inline int security_socket_bind(struct socket *sock, 1353 struct sockaddr *address, 1354 int addrlen) 1355 { 1356 return 0; 1357 } 1358 1359 static inline int security_socket_connect(struct socket *sock, 1360 struct sockaddr *address, 1361 int addrlen) 1362 { 1363 return 0; 1364 } 1365 1366 static inline int security_socket_listen(struct socket *sock, int backlog) 1367 { 1368 return 0; 1369 } 1370 1371 static inline int security_socket_accept(struct socket *sock, 1372 struct socket *newsock) 1373 { 1374 return 0; 1375 } 1376 1377 static inline int security_socket_sendmsg(struct socket *sock, 1378 struct msghdr *msg, int size) 1379 { 1380 return 0; 1381 } 1382 1383 static inline int security_socket_recvmsg(struct socket *sock, 1384 struct msghdr *msg, int size, 1385 int flags) 1386 { 1387 return 0; 1388 } 1389 1390 static inline int security_socket_getsockname(struct socket *sock) 1391 { 1392 return 0; 1393 } 1394 1395 static inline int security_socket_getpeername(struct socket *sock) 1396 { 1397 return 0; 1398 } 1399 1400 static inline int security_socket_getsockopt(struct socket *sock, 1401 int level, int optname) 1402 { 1403 return 0; 1404 } 1405 1406 static inline int security_socket_setsockopt(struct socket *sock, 1407 int level, int optname) 1408 { 1409 return 0; 1410 } 1411 1412 static inline int security_socket_shutdown(struct socket *sock, int how) 1413 { 1414 return 0; 1415 } 1416 static inline int security_sock_rcv_skb(struct sock *sk, 1417 struct sk_buff *skb) 1418 { 1419 return 0; 1420 } 1421 1422 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1423 int __user *optlen, unsigned len) 1424 { 1425 return -ENOPROTOOPT; 1426 } 1427 1428 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1429 { 1430 return -ENOPROTOOPT; 1431 } 1432 1433 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1434 { 1435 return 0; 1436 } 1437 1438 static inline void security_sk_free(struct sock *sk) 1439 { 1440 } 1441 1442 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1443 { 1444 } 1445 1446 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1447 { 1448 } 1449 1450 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1451 { 1452 } 1453 1454 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1455 { 1456 } 1457 1458 static inline int security_inet_conn_request(struct sock *sk, 1459 struct sk_buff *skb, struct request_sock *req) 1460 { 1461 return 0; 1462 } 1463 1464 static inline void security_inet_csk_clone(struct sock *newsk, 1465 const struct request_sock *req) 1466 { 1467 } 1468 1469 static inline void security_inet_conn_established(struct sock *sk, 1470 struct sk_buff *skb) 1471 { 1472 } 1473 1474 static inline int security_secmark_relabel_packet(u32 secid) 1475 { 1476 return 0; 1477 } 1478 1479 static inline void security_secmark_refcount_inc(void) 1480 { 1481 } 1482 1483 static inline void security_secmark_refcount_dec(void) 1484 { 1485 } 1486 1487 static inline int security_tun_dev_alloc_security(void **security) 1488 { 1489 return 0; 1490 } 1491 1492 static inline void security_tun_dev_free_security(void *security) 1493 { 1494 } 1495 1496 static inline int security_tun_dev_create(void) 1497 { 1498 return 0; 1499 } 1500 1501 static inline int security_tun_dev_attach_queue(void *security) 1502 { 1503 return 0; 1504 } 1505 1506 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1507 { 1508 return 0; 1509 } 1510 1511 static inline int security_tun_dev_open(void *security) 1512 { 1513 return 0; 1514 } 1515 1516 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1517 struct sk_buff *skb) 1518 { 1519 return 0; 1520 } 1521 1522 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1523 struct sockaddr *address, 1524 int addrlen) 1525 { 1526 return 0; 1527 } 1528 1529 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1530 struct sock *sk, 1531 struct sock *newsk) 1532 { 1533 } 1534 #endif /* CONFIG_SECURITY_NETWORK */ 1535 1536 #ifdef CONFIG_SECURITY_INFINIBAND 1537 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1538 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1539 int security_ib_alloc_security(void **sec); 1540 void security_ib_free_security(void *sec); 1541 #else /* CONFIG_SECURITY_INFINIBAND */ 1542 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1543 { 1544 return 0; 1545 } 1546 1547 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1548 { 1549 return 0; 1550 } 1551 1552 static inline int security_ib_alloc_security(void **sec) 1553 { 1554 return 0; 1555 } 1556 1557 static inline void security_ib_free_security(void *sec) 1558 { 1559 } 1560 #endif /* CONFIG_SECURITY_INFINIBAND */ 1561 1562 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1563 1564 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1565 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1566 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1567 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1568 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1569 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1570 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1571 struct xfrm_sec_ctx *polsec, u32 secid); 1572 int security_xfrm_state_delete(struct xfrm_state *x); 1573 void security_xfrm_state_free(struct xfrm_state *x); 1574 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1575 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1576 struct xfrm_policy *xp, 1577 const struct flowi *fl); 1578 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1579 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1580 1581 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1582 1583 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1584 struct xfrm_user_sec_ctx *sec_ctx, 1585 gfp_t gfp) 1586 { 1587 return 0; 1588 } 1589 1590 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1591 { 1592 return 0; 1593 } 1594 1595 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1596 { 1597 } 1598 1599 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1600 { 1601 return 0; 1602 } 1603 1604 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1605 struct xfrm_user_sec_ctx *sec_ctx) 1606 { 1607 return 0; 1608 } 1609 1610 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1611 struct xfrm_sec_ctx *polsec, u32 secid) 1612 { 1613 return 0; 1614 } 1615 1616 static inline void security_xfrm_state_free(struct xfrm_state *x) 1617 { 1618 } 1619 1620 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1621 { 1622 return 0; 1623 } 1624 1625 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1626 { 1627 return 0; 1628 } 1629 1630 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1631 struct xfrm_policy *xp, const struct flowi *fl) 1632 { 1633 return 1; 1634 } 1635 1636 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1637 { 1638 return 0; 1639 } 1640 1641 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1642 { 1643 } 1644 1645 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1646 1647 #ifdef CONFIG_SECURITY_PATH 1648 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1649 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1650 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1651 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1652 unsigned int dev); 1653 int security_path_truncate(const struct path *path); 1654 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1655 const char *old_name); 1656 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1657 struct dentry *new_dentry); 1658 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1659 const struct path *new_dir, struct dentry *new_dentry, 1660 unsigned int flags); 1661 int security_path_chmod(const struct path *path, umode_t mode); 1662 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1663 int security_path_chroot(const struct path *path); 1664 #else /* CONFIG_SECURITY_PATH */ 1665 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1666 { 1667 return 0; 1668 } 1669 1670 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1671 umode_t mode) 1672 { 1673 return 0; 1674 } 1675 1676 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1677 { 1678 return 0; 1679 } 1680 1681 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1682 umode_t mode, unsigned int dev) 1683 { 1684 return 0; 1685 } 1686 1687 static inline int security_path_truncate(const struct path *path) 1688 { 1689 return 0; 1690 } 1691 1692 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1693 const char *old_name) 1694 { 1695 return 0; 1696 } 1697 1698 static inline int security_path_link(struct dentry *old_dentry, 1699 const struct path *new_dir, 1700 struct dentry *new_dentry) 1701 { 1702 return 0; 1703 } 1704 1705 static inline int security_path_rename(const struct path *old_dir, 1706 struct dentry *old_dentry, 1707 const struct path *new_dir, 1708 struct dentry *new_dentry, 1709 unsigned int flags) 1710 { 1711 return 0; 1712 } 1713 1714 static inline int security_path_chmod(const struct path *path, umode_t mode) 1715 { 1716 return 0; 1717 } 1718 1719 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1720 { 1721 return 0; 1722 } 1723 1724 static inline int security_path_chroot(const struct path *path) 1725 { 1726 return 0; 1727 } 1728 #endif /* CONFIG_SECURITY_PATH */ 1729 1730 #ifdef CONFIG_KEYS 1731 #ifdef CONFIG_SECURITY 1732 1733 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1734 void security_key_free(struct key *key); 1735 int security_key_permission(key_ref_t key_ref, 1736 const struct cred *cred, unsigned perm); 1737 int security_key_getsecurity(struct key *key, char **_buffer); 1738 1739 #else 1740 1741 static inline int security_key_alloc(struct key *key, 1742 const struct cred *cred, 1743 unsigned long flags) 1744 { 1745 return 0; 1746 } 1747 1748 static inline void security_key_free(struct key *key) 1749 { 1750 } 1751 1752 static inline int security_key_permission(key_ref_t key_ref, 1753 const struct cred *cred, 1754 unsigned perm) 1755 { 1756 return 0; 1757 } 1758 1759 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1760 { 1761 *_buffer = NULL; 1762 return 0; 1763 } 1764 1765 #endif 1766 #endif /* CONFIG_KEYS */ 1767 1768 #ifdef CONFIG_AUDIT 1769 #ifdef CONFIG_SECURITY 1770 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1771 int security_audit_rule_known(struct audit_krule *krule); 1772 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1773 void security_audit_rule_free(void *lsmrule); 1774 1775 #else 1776 1777 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1778 void **lsmrule) 1779 { 1780 return 0; 1781 } 1782 1783 static inline int security_audit_rule_known(struct audit_krule *krule) 1784 { 1785 return 0; 1786 } 1787 1788 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1789 void *lsmrule) 1790 { 1791 return 0; 1792 } 1793 1794 static inline void security_audit_rule_free(void *lsmrule) 1795 { } 1796 1797 #endif /* CONFIG_SECURITY */ 1798 #endif /* CONFIG_AUDIT */ 1799 1800 #ifdef CONFIG_SECURITYFS 1801 1802 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1803 struct dentry *parent, void *data, 1804 const struct file_operations *fops); 1805 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1806 struct dentry *securityfs_create_symlink(const char *name, 1807 struct dentry *parent, 1808 const char *target, 1809 const struct inode_operations *iops); 1810 extern void securityfs_remove(struct dentry *dentry); 1811 1812 #else /* CONFIG_SECURITYFS */ 1813 1814 static inline struct dentry *securityfs_create_dir(const char *name, 1815 struct dentry *parent) 1816 { 1817 return ERR_PTR(-ENODEV); 1818 } 1819 1820 static inline struct dentry *securityfs_create_file(const char *name, 1821 umode_t mode, 1822 struct dentry *parent, 1823 void *data, 1824 const struct file_operations *fops) 1825 { 1826 return ERR_PTR(-ENODEV); 1827 } 1828 1829 static inline struct dentry *securityfs_create_symlink(const char *name, 1830 struct dentry *parent, 1831 const char *target, 1832 const struct inode_operations *iops) 1833 { 1834 return ERR_PTR(-ENODEV); 1835 } 1836 1837 static inline void securityfs_remove(struct dentry *dentry) 1838 {} 1839 1840 #endif 1841 1842 #ifdef CONFIG_BPF_SYSCALL 1843 union bpf_attr; 1844 struct bpf_map; 1845 struct bpf_prog; 1846 struct bpf_prog_aux; 1847 #ifdef CONFIG_SECURITY 1848 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1849 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1850 extern int security_bpf_prog(struct bpf_prog *prog); 1851 extern int security_bpf_map_alloc(struct bpf_map *map); 1852 extern void security_bpf_map_free(struct bpf_map *map); 1853 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1854 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1855 #else 1856 static inline int security_bpf(int cmd, union bpf_attr *attr, 1857 unsigned int size) 1858 { 1859 return 0; 1860 } 1861 1862 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1863 { 1864 return 0; 1865 } 1866 1867 static inline int security_bpf_prog(struct bpf_prog *prog) 1868 { 1869 return 0; 1870 } 1871 1872 static inline int security_bpf_map_alloc(struct bpf_map *map) 1873 { 1874 return 0; 1875 } 1876 1877 static inline void security_bpf_map_free(struct bpf_map *map) 1878 { } 1879 1880 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1881 { 1882 return 0; 1883 } 1884 1885 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1886 { } 1887 #endif /* CONFIG_SECURITY */ 1888 #endif /* CONFIG_BPF_SYSCALL */ 1889 1890 #endif /* ! __LINUX_SECURITY_H */ 1891 1892